Seagate Technology Incorporated

Gunther Heine

Hans L Leuthold

Norbert Steven Parsoneault

David John Jennings

Wesley R Clark

Lakshman Nagarathnam

Hydrodynamic bearing having a shaft relatively rotatable with respect to a surrounding sleeve and having a thrust plate on one end thereof rotating in a recess of the sleeve. The shaft is preferably interrupted by a equi-pressure groove accessing a central reservoir in the shaft and having journal bearings defined by herringbone patterns above and below the groove to stabilize and provide stiffness to the cartridge. The stiffness of the cartridge is further enhanced by a thrust plate carried at one end of the shaft and rotating in a recess of the sleeve and being used to define thrust bearings on either surface thereof.

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Aptos, CA, United States of America

Gunther Heine